I have a problem that I find a hard nut to crack.
For days now I'm trying to define cyclic BCs inside a complex geometry.

I split my structure into two different surface files. One containing the outer hull of the structure and one the faces I want to be cyclic. I told snappyHexMesh to build a faceSet from the surface that needs to be the BC, which works great.

Then I run createBaffles to define the cyclic patches. But as soon as I try to do anything after that, I get the error message, that the face number on one patch doesn't match the face number on the other.

I tried all ways I can imagine to get this to work, but always end up with this number mismatch error.

This approach worked on a much more simple test case, but not on the geometry I'm supposed to mesh.

Has anyone done something similar before and can share some insight on this topic?